Just caught on to a brilliant blog by a white woman who has three children of color. She shares her list of adoption books on her site! Thanks "Mama D"!
While the books address adoption, a number of the stories have central themes of transracial and multicultural/multinational families.

Excerpt from "Mama D's" blog:

books about adoption, parenting, family, and belonging ... and one on race
(find them at, or order them from, your local bookstore)
Parenting the Hurt Child : Helping Adoptive Families Heal and Grow by Gregory Keck, Regina M. Kupecky
Toddler Adoption: The Weaver's Craft by Mary Hopkins-Best
Let's Talk About It: Adoption by Fred Rogers
I Love You Rituals by Rebecca Anne Bailey, Sarah Whalen, Jeff Jones
Attaching in Adoption by Deborah D. Gray
Adoption Parenting: Creating a Toolbox, Building Connections by Jean MacLeod and Sheena Macrae
Setting Limits with Your Strong-Willed Child by Robert J. MacKenzie
I Don't Have Your Eyes by Carrie Kitzke
Three Names of Me by Mary Cummings
We See The Moon by Carrie Kitze
When Sophie Get's Angry - Really, Really Angry by Ann Caron
Whoever You Are by Mem Fox and Leslie Staub
Yell-Oh Girls!: Emerging Voices Explore Culture, Identity, and Growing Up Asian American by Vickie Nam
It's Okay to Be Different by Todd Parr (we love most books by Todd Parr)
I Love You, Little One by Nancy Tafuri